-97.84% is the change from 974 to 21
Calculation steps:
[( 21 - 974 ) ÷ 974] x 100 = -97.84%
Formula
Percentage change = [(21 - 974) / 974] x 100
Subtract the new number by the original number
21 - 974 = -953
-953 ÷ 974 = -0.9784394250513347
-0.9784394250513347 x 100 = -97.84%